Glare-preventing device for headlights



M. NARODI CK. GLARE PREVENTING DEVICE FOR HEADLIGHTS. 3

APPLICATION FILED MAY'& .1919.

Patented M21129, 1920.

6 ATTORNEY.

UNITED STATES PATENT OFFICE.

MARTIN NARODICK, OF CHICAGO, ILLINOIS.

GLARE-PREVENTING DEVICE FOR HEADLIGI-ITS.

Application filed May 8, 1919. Serial No. 295,680.

To all whom it may concern.-

Be it known that I, MARTIN NARODICK, a citizen of the present Government of Bussia, and a resident of Chicago, Cook county, and State of Illinois, have invented certain new and useful Improvements in Glare-Preventing Devices for Headli hts, of which the following is declared to )e a full, clear, and exact description.

This invention relates to glare preventing devices for headlights and its principal ob-.

ject is to provide simple and efficient means which may be readily installed in headlights, and capable of minimizing the glare which is commonly present in headlights, due to the presence of a parabolic reflector. This invention is particularly useful in connection with the headlights of automobiles and other motor vehicles, and consists in a spirally arranged strip of material capable of being secured in the hollow space or cavity of the reflector ofthe headlight, andcxtending from the lens to and behind the source of light, which is usually in the form of an incandescent electric light bulb. The -invention further consists in the several novel features hereinafter fully set forth and more particularly defined in the claims.

The invention is clearly shown in the drawing accompanying this specification, in which:

Figure 1 is a front elevation of a headlight, showing a simple embodiment of my present invention applied thereto;

character 4: designates an automobile headlight of well-known construction, comprisingpthe usual casing 5 in which is secured a parabolic reflector .6; a lens 7, and an annular' or ring-like cover 8 removably secured to the casing 5 and arranged to hold the lens Specification of Letters Patent.

Patented Hal. 9, 1920.

plest form comprises a sheet of thin material such as aluminum, which is blanked out, I

by a suitable die, to forma substantially circular plate, as is illustrated in Fig. 2. Conveniently, a plurality of projections 12 are formed at the marginal edge of the circular plate which act as centering devices for the plate. Said plate .is slit,.by suitable dies, along the spiral lines 13, the slits commencing at the points 14 and terminating at the points 15, and leaving therebetween spiral shaped strips 16, .16. At the center of the plate is formed an opening 17 for the reception of the metal shell of the incandescent electric light bulb, and oppositely disposed notches 18 are formed at the edge of saidopening 17 through which the usual pins or lugs on the shell of the incandescent light bulbmay pass. Said pins or lugs form the usual attaching means between the shell and socket of automobile headlights, as is well known.

The device is attached to the headlight by first removing the cover 8 with its lens 7, and thereupon placing the glare preventing device against the usual gasket 19 which is held in a groove at the outer end of the re flector 6. light bulb is then inserted through the opening 17 and the bulb pushed back into the hollow of the reflector, and the shell inserted in the socket 9 and turned to bring the pins into the usual bayonet slots therein. The cover with the lens is then replaced, and the marginal portion of the device is thereby clamped between the lens and gasket. It is to be observed that when the spiral strips are pushed backward, the convolutions thereof take the form of inclined spirals,

and conform substantially with the inner face of the reflector, and that reflected rays, which would normally be carried forward by the reflector, are intercepted by the convolutions'of the glare preventer and only those rays which pass laterally between the convolutions are projected out through the lens of the lamp. Consequently, the brilliant glare which is usually present in the headlights of automobiles, is prevented although the light' issuing from the lamp is bright and gives very satisfactory servlce for illuminating the road infront of the automobile. The device itself may have a polished surface, thereby acting in the nature of a reflector.

The shell of the incandescent More or less variation of the exact details of construction is possible without departing from the spirit of this invention; I desire, therefore, not to limit myself to the exact form of the construction shown and described, but intend, in the following claims, to point out all of the invention disclosed herein.

I claim as new, and desire to secure by Letters Patent:

- 1. As a new article of manufacture, a glare preventing device for headlights, compris-- ing a spiral strip arranged to extend from the outer edge of the reflector of a headlight to a position behind the lamp of the headlight, the several convolutions; of the spiral strip acting to intercept the majority of light rays reflected by the reflector.

2. A glare preventing device for headlights, comprising a sheet of material having a spirally shaped slit formed therein to provide a spiral strip commencing adjacent the outer margin of the device and terminating adjacent its middle portion.

3. A glare preventing device for headlights, comprising a sheet of material formed with a plurality of spiral slits which divide the sheet into a plurality of spiral strips which commence adjacent the outer margin the sheet into a plurality of spiral strips which commence adjacent the outer margin of the sheet of metal and terminate adjacent its middle portion, there being a centrally locatecl aperture, formed in said sheet of material, adapted to receive the shell of an incandescent light bulb.

5. A glare preventing device for headlights, comprising a sheet of material, having an outer annular flat portion and a spirally arranged strip extending in an ininclined plane, from said flat portion to a point along the aXis of the device.

MARTIN NARODICK. 

